Photography – Fluid-treating apparatus – Fluid application to one side only of photographic medium
Patent
1995-08-31
1997-11-18
Rutledge, D.
Photography
Fluid-treating apparatus
Fluid application to one side only of photographic medium
396627, G03D 302
Patent
active
056897499
ABSTRACT:
A developing apparatus for developing a photoresist-coated substrate comprises a spin chuck having a supporting surface smaller in size than the substrate and adapted to be spin-driven with the photoresist-coated substrate surface held upward, a cup surrounding the spin chuck, a developing solution nozzle for applying a developing solution on the photoresist-coated substrate held on the spin chuck, a first washing solution nozzle for applying a washing solution to the photoresist-coated surface of the substrate held on the spin chuck, a second washing solution nozzle for applying the washing solution to a rear surface of the substrate on the spin chuck, a liquid seal ring mounted substantially coaxial with the spin chuck and having a diameter greater than the supporting surface of the spin chuck and smaller than the substrate, and a liquid film forming section provided on an upper end of the liquid seal ring and located near and opposite a peripheral edge portion of a rear surface of the substrate on the spin chuck to provide a clearance relative to the peripheral edge portion of the rear surface of the substrate, in which the liquid film forming section includes a first wall portion situated substantially orthogonal to the rear surface of the substrate and in an outwardly facing relation, and a second wall portion gently inclined relative to the rear surface of the substrate and situated in an inwardly facing relation.
REFERENCES:
patent: 5555234 (1996-09-01), Sugimoto
Morioka Norimitsu
Tanaka Hideya
Yoshihara Kosuke
Rutledge D.
Tokyo Electron Kyushu Limited
Tokyo Electron Limited
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